Bovine respiratory disease in feedlots is the leading cause of cattle morbidity and mortality, and prevention-focused approaches offer both welfare and economic benefits over treatment-oriented systems.
Bovine respiratory disease prevention illustrates the alignment between welfare and economics in feedlot systems. Stressed, immunosuppressed cattle develop respiratory disease; disease causes suffering, treatment costs, and reduced performance. The welfare and economic case for prevention -- through lower-stress transport, commingling management, pre-condition vaccination, and arrival protocols that minimise stress -- is stronger than for treatment. Yet mass metaphylaxis (dosing all animals with antibiotics at arrival) remains common because it is cheaper than implementing individual prevention measures. The antimicrobial resistance consequences of this approach add a public health welfare dimension to what is already a clear animal welfare issue.